Shank-lasting machine



Aug. 6, 1929. M. E. FERNALD 1,723,342

SHANK LASTING MACHINE Filed Dec. 1,922 a Sheets-Sheet 1 Aug. 6, 1929. M.E. FERNALD SHARK LASTING MACHINE Filed Dec. 8, 1922 (3 Sheets-Sheet 2Aug. 6, 1929. M. E. FERNALD SHANK LAS'IING MAGHPE Filed Dec 8, 1922 aSheets-Sheet 3 Patented Aug. 6, 1929.

UNITED STA MARK E. FERNALD, OF SOUTHBORQ, MASSACHUSETTS, ASSIGNOR TO C.C. BLAKE, IN- CORPORATED, OF BOSTON, MASSACHUSETTS, A CORPORATION OF NEWYORK.

SHANK-LASTING MACHINE.

Application filed December The present invention relates to lastingmachines which are used in the manufacture of shoes, and moreparticularly to shank lasting machines used to last the shanks of Blakewelt shoes.

In practicing the method of lasting dip closed in the Blake Patent'No.1261,7 11, April 2, 1918, it was first proposed to updraw the upperaround the forepart of the shoe and then bind the updrawn upper to theedge face of the insole with a binder of flexible material the free endsof which extended loosely along the shank of the shoe. Thereafter theseloose ends of the, binder were employed as wipers for wiping the looseupper at the shank of the shoe into lasted position against the edgeface of the insole. Many ditliculties arose in the use'of a flexiblebinder and this method of lasting the forepart was improved bysubstituting a formed binder for the flexible hinder as disclosed in theapplication of Charles C. Blake, Serial No. 465,131, April 28,1921,reference to which is made by permission. This formed binder terminatesat the juncture of the shank and ball and so it becomes necessary todevise another method of lasting the shanks of Blake welt shoes as thereare now no loose ends of the binder available for use as wipers. n

The object of the present invention is to produce a machine for lastingthe shanks of Blake welt shoes in which the foreparts are bound againstthe edge face of the insole by a formed binder. I

To the accomplishment of this object and such others as may hereafterappear the features of the invention relate to certain,

devices, combinations, and arrangements of parts hereinafter describedand then set forth broadly and in'detail in the appended claims whichpossess advantages which will be apparent to those skilled in the art.

The various features of the present invention will be readily understoodfrom an inspcction of the accompanying drawings 8, 1 22. Serial No.605,615.

in section, showing the engagement by the grippers of the loose upper atthe'shank of the shoe;

Fig. at is a detail in left side elevation, partly in section, of thegripper gage in place upon the shank portion of theinsole;

Fig. 5 is a detail in front elevation, partly in section, showing themechanism for operating the grippers to stretch the upper and place thestretched upper in lasted position against the edge face of the insole;

Fig. 6 is a detail in front elevation, partly in section, of themechanism for operating the gripper gage to locate it upon the shankportion of the insole;

Fig. 7 a detail in front elevation, partly in section, showing the finalposition of the grippers with the upper located in lasted poslitionagainst the edge face of the insole; 2111C I Fig. 8' a detail of one ofthe gripper aws.

In practicing the method of lasting disclosed in the Blake Patent No.1,261,711, hereinbefore referred to, work comes to the present'machinedirectly from the machine disciosed in the patent to Blake No.1,386,681, Aug. 9, 1921. The work as it comes to the present machine hasanupper 1 (Fig. 1), an insole 2, both assembled on a last The upper atthe heel part is lasted over upon the heel seat. In addition,

the forepart of the upper is bound in lasted position against the edgeface of the insole by a formed binder 4 which is secured to the forepartof the shoe by a clamp 5. The work is placed upon a heel. pin 6 whichenters the socket usually formed in the cone of the last. The pin 6 isformed upon the upper end of a post 7 which is carried by a bracket 8secured to the top of ,a column 9. After positioning the work on the/pin 6 the operative spreads cement upon the edge face of the insolearound the shank and fora-apart. This cement secures the upper in finallasted position to the edge face of the insole. f

Thereafter the operative interposes the loose upper at the shank betweena pair of gripper jaws 10 (Figs. and 7 Each jaw is secured to the lowerend of a post 11 which isarranged to slide upon a support 12 betweenstop pins 18. The posts 11 slide upon the support 12 when arrangedsubstanoperation.

tially normal to the bar and are cramped upon the bar when they aretipped upon the bar. Each jaw is formed of a curved piece of springmetal which is shaped to fit the curvature of the edge face of theinsole at the shank of the shoe (Fig. 2).

The support 12 is provided with a central hole 14: (Figs. 3 and 7 whichfits over a pin 15 mounted in a carrier 16 (Fig. The top of the carrier16 is provided with a trunnion 17 which is held in place on a secondcarrier 18 by a screw 19 the construction being such as to allow thecarrier 16 to turn freely on an axis substantially normal to the shankof the exposed face of the insole.

The carrier 18 is mounted to freely tip and slide upon a rod 20extending over the shank of the shoe. The rod 20 is secured by a nut 21to a bushing 22 which is mounted to turn about a vertical axis in thefront end of an arm 23. The rear end of the arm 23 is forked (Fig. 2)and pivoted on a horizontal pin 24 (Fig. 1) carried by the bracket 8.

In order to gage the position of the aws 10 so that they will alwaysoperate in the plane of the last bottom at the line of operation thebottom of the carrier 16 is provided with a second trunnion 25 uponwhich a gage 26 (Fig. 1) is mounted. This gage is shaped like a tinyflat iron and is designed to engage the exposed face of the insole atthe shank thereof and locate the jaws 1O properly relatively to the edgeface of the insole. 'The exposed face of the insole at this point isinclined and the gage 26 is designed to accommodate itself to thisinclination and tip the carrier 18 on the rod 20 to adapt the jaws 10 tothe inclination at the edge face of the insole at the line of Themovement of the gage 26 on the trunnion 25 is limited to a movementlongitudinally of the last by a. spring finger 27 which extends from theback of the gage through a tube 28 carried by the bushing 22. The tubeis held in position on the bushing by a threaded rod 29 centrallythreaded through the bushing. The finger 27 is provided with a. stop 30which, through engagement with the rear of the tube 28, limits thesliding movement of the carrier 18 on the rod 20.

With this construction the gage 26 can be adjusted to rights or lefts ofany size or style of last. The gage may be moved longitudinally of thelast through the sliding connection of the carrier 18 with the rod 20.The gage may also be moved laterally of the last through the pivotalconnection of the bushing 22 with the arm 23. The gage also tipslongitudinally of the last to adapt itself to the spring of the lastthrough the connection between the gage and the trunnion 25. In additionto sharing all these movements of the gage the support 12 carrying thejaws 10 may also move, through the trunnions 17 and 25, about an axisnormal to the last.

' In order to locate the gage 26 in position upon the exposed face ofthe insole at the shank thereof the arm 23 carries a loop 31 (Fig. 1.)The free ends of the loop extend above the arm 23 and each carries acoiled spring 32interposed between a plate 33 and the top of the arm 23.To adjust the tension with a lug 38 engaged by a notch 39 formed in anarm 40 pivoted on a horizontal rod 11 carried by the plate 37. Normallythe arm 40 is held elevated with the hook 36 tipped out of the path ofmovement of the loop 31 by a spring 42 which is coiled around the hub ofa bell crank lever a3 (Fig. 6) pivoted on the rod 41. One end of thespring 42 is engaged beneath a pin 4A on the arm 40. The other end ofthe spring is engaged in an opening 45 formed in the hub.

In order to engage the hook 36 with the loop 31 and thus lower the armto locate the gage 26 on the insole the machine is provided with atreadle 16 (Fig. 1) the rear end of which is secured to a rock shaft a?journaled on a bracket 48 secured to the column 9. The treadle 46carries a hori zontal rod 49 to the opposite ends of which a link 50 isconnected. The rear ends of the links 50 are pivot-ed upon the shaft 17The right hand link 50 is connected by a vertical rod 51 (Fig. 5) to oneend of the bell crank lever 43. The left hand link 50 is connected by arod 52 to a bell crank lever 53 pivoted on a rod 5% carried by the plate37. The pivot pin between the rod 51 and bell crank lever 43 is providedwith a depending finger 55 which when the treadle 16 is depressedengages a hook 56 formed on the lower end of the arm 40. \Vhen the arm40 is depressed through the connections described a segment 57 pivotedon the plate 37' and normally engaged with the arm 10 drops downwardlyunder the influence of gravity. During the first part of this move--ment the segment strikes the back of the hook 36 and inserts it into theloop 31. Continued depression of the arm 40 pulls the arm 23 downwardand locates the gage 26 on the exposed face of the insole. The segment57 continues to drop under the influence of gravity until the operativereleases the treadle with the gage 26 positioned upon the insolewhereupon the segment 57 looks the arm 10 in its depressed position(Fig. 6). lVhen the treadle 46 is released it is elevated into aninoperative position by a coiled spring 58 one end of which is connectedto the bracket 8 and the other end of which is connected to the'treadle46.

During the downward movement of the gage 26 the operative holds thesupport 12 in place upon the carrier 16. lVhen the gage 26 meets thesole and adapts itself to the inclination thereof the upper surface ofthe gage engages a clamp 75 pivoted on the support '16 and tips it intothe position of Fig. 4 where it clamps the bar 12 firmly on the support16.

The operative new positions a pair of arms 59 against the posts 11beneath the bar 12, one on each side of the shoe. Each of the arms 59 ispivoted at the rear of the machine upon a vertical pin (Fig. 2) which iscarried by a sleeve 61 (Fig. 1) rotatably mounted on the pin 24. Each ofthe arms 59 is normally held in an inoperative position by a coiledspring 62 one end of which is connected to the bracket 8 and the otherend of which is connected to an arm 63 depending from the sleeve (ll.The arms 59 are drawn down from their normal inoperative position andpositioned against the postsll by the operative.

Cooperating with each of the jaws 10 is a second gripper jaw 64- whichis loosely carried by a wire bracket 65 secured to the forward end ofthe arms 59. Each of the gripper jaws 64 is forked to straddle the post11 and support 12. The narrow slot shown in Fig. 8 fits over the support12 while the under slot fits over the post 11. The upper is grippedbetween the jaw 10 and the tines 65 of the jaw (34. The gripper jaws l0and ($4 carry the upper from the position of Fig. 3 to the position ofFig. 7 in a straight line movement thus stretching the upper andlocating the stretched upper in lasted position against the edge face ofthe insole.

In order to actuate the grippers to stretch the upper and locate thestretched upper against the edge face of the insole the arms 59 areembraced by the verticalarms of the bell crank levers 43 and 53respectively (Fig. which are operated through the connections previouslydescribed by a second depression of the treadle all During the firstmovement of the arms 59 inwardly the wire bracket (3.3 pushes againstthe upper part of the gripper jaw G l causing its shoulders (36 toengage the back of the post 11 (Figs. and 7) and turn thereon thusclosing the tines of the gripper jaw firmly upon the upper. Furthermovementof the arms 59 inwardly causes the gripper jaws 1 0 and G4 tomove along a plane toward the work to stretch the upper and bring thestretched upper into lasted position against the edge face of theinsole. If one jaw 10 reaches the insole first the work turnsautomatically upon the heel pin 6 to position the work so that bothpairs of grippers may liningthe stretched upper into the shank. lVheninward movement of the jaws 10 is limited by the insole the posts 11 tipupon the bar and thus become cramped upon the bar.

To release the work so that it may be withdrawn from the machine theoperative engages a tail 67 (Fig, 6) on the segment 57 and swings thesegment into engagement with a pin 68 ontheplate 37. This movementunlocks the arm and releases it to the influence of the spring 4L2 whichelevates the arm and tips the hook 36 out of engage ment with the'loop31. The arm 23 is thus released to the influence a spring 69 (Fig. 2)one end of which is secured to a post 70 on the arm and the other end ofwhich is secured to a post 71 on a plate 72 on the bracket 8. The arms59 are also withdrawn from beneath the support 12 and these arms thenmove upwardly under the influence of the springs 62. As the arms returnto an. inoperative position a corner 73 (Fig. 2) formed on the back ofeach of the arms so strikes the plate 72 and turns the arms aboutthepins (30 until an edge 74L on the arms rests against the plate '(2. Thisconstruction insures the return of the arms 55) to a uniform inoperativeposition. As the arms 59 return to their inoperative position thegripper jaws 64; are withdrawn from the work. As they withdraw thegripper jaws (3'1: are maintained in place on the top of the wirebracket by uprights 76 thereon (Fig. l)

The lasted shoe, together with the jaws 10 and support 12, may now beremoved from the machine. As soon the the cement is dry the foreparthinder, the jaws l0 and the clamps are removed whereupon the lasted shoeis ready for the welt sewing operation. After the welt sewing operationthe entire skirt of the upper standing above the exposed face of theinsole is trimmed in readis for the application of the outsole.

While the primary object of the present invention is directed to anarrow field in the art of lasting shoes, it is not to be understood aslimiting the scope of the claims, where the context otherwise permits,to a shank lastin machine, as it will be apparent to those skilled inthe art that certain fea tures and combination of parts hereinbeforedescribed are well adapted for general use in the lasting of shoes.

It will also be clear to those skilled in this class of machines andwith the general objects of the present invention in view that changesmay be made in the details of struc-. ture, the described andillustrated embodiment thereof being intended as an exploitation of itsunderlying essentials, the features whereof are definitely stated in theclaims herewith.

What is claimed as new, is

l. 4- lasting machine, having, in combination, a gripper having jaws fornippinn' the upper hetwceu them, and means for operating the gripper tostretch the upper and locate the stretched upper in final lastedposit-ion against the edge face of the insole at the shank thereof.

2. A lasting machine, having, in combination, a gripper having jaws tornipping the upper between them, means for operating the gripper tostretch the upper and locate the stretched upper in final lastedposition against the edge face or" the insole, and means for fastening apart of the gzippe to the shoe to bind the lasted upper against the edgeface of the insole.

8. A lasting machine, having, in comhination, grippers each having jawsfor nipping the upper between them arranged on opposite sides of theshank of tre shoe, and means for operating the grippers to stretch theupper and locate the stretched upper in iinal lasted position againstthe edge face of the insole at the shank thereof.

A lasting machine, having, in combination, means for supporting shoe for"tree pivotal movement about an axis intcrsect g the shoe bottom, andmeans, including grippers each having jaws for nipping the upper betweenthem, for simultaneously lastin both sides of the shank.

o. A lasting machine, having, in comhination, lasting means, andmechanism tor operating said means along and positively holding it in asingle plane parallel to the exposed "face of the insole atthe line 01"?operation to last the upper.

G. A lasting machine, having, in combination. lasting means, andmechanism ipr operating said means along and posi 'ely holding it in theplane of the last is ttom at the line of operation to last the upper.

7. A lasting machine, raving, in combination, grippers, means forimparting a complete stretching movement along single plane to thegrippers, and means i varying the inclination of said. grippersaccordance with variations in the inclination of the edge faces of theinsoles operated upon.

8. A lasting machine, having, in comlomation, grippers, means forin'iparting a complete stretching movement along a single plane to thegrippers, and means for varying the height of said grippers in accordance with variations in the height of work operated upon.

9. A lasting machine, having, in comh1nation, grippers, means forimparting a complete stretching movement along asmgle plane to thegrippers, means for varying the ,r in

of tor lasting tie insole the f flllli of the shoe, and

311 W said suimort lon 'itudimeans for ad ustin or the shoe.

i .astme; machine, ha

. i hination, a supp ,rt extendine 'ing, in comtransversely at the shankof the shoe, and

in comisversclj ting deed to hiuation. a of the shoe and provided withla vices, a carrier therefor, a gage moi t engage the work, and meansoperated by the :t'or clamping the support on the carrier.

lasting machine, having, in comhination, grippers each provided withjaws Ior ni ping the upper between them mounton )osite sides of theshank, and a re means for operating the grippers first no upper, then tostretch the upper stretched upper against the 1e insole only.

'. A lasting machine, having, in comsupport extending transverselyprovider, with a pair of nongripper jaws slidahl v mount-e. pair of armsembracing the 7 r jaws, and a pair of gripper jaws cooaerating with theother par of gripper aws respectively.

16. A lasting machine, raving, in combination, a gripper having jaws fornipping the upper hetween them, means for operatgripper to stretch theupper and locate the s retched upper against the edge face of theinsole. and 31162 for securing the upper in final lasted posh-ion to theedge are of the insole.

17. A lasting machine, having, in comhinati n, grippers each having jawsfor nipping the upper between them mounted upon the L o posite sides ofthe shoe means for o) i A a l crating the grippers to stretch the upperand locate the stretched upper against the iii edge face of the insole,and means for securing the upper in final lasted position to the edgeface of the insole. I

18. A shoe machine, having, in combination, a gage, means havingnormally a broken connection with the gage for drawing the gage downupon the exposed face of the sole, and mechanism for making theconnection and operating said means.

19, A shoe machine, having, in combination, a gage, means havingnormally a broken connection with the gage for drawing the gage downupon the exposed face ot the sole, mechanism for making the connectionand operating said means and locking said gage in position on the sole.

20. A lasting machine, having, in combination, a support, a gripper jawloosely mounted thereon, a second support, a second. gripper jaw carriedthereby, and means for relatively moving the supports to operate thegripper jaws to grasp an upper. I

21. A lasting machine, having, in combination, a support, a post carriedthereby, a gripper jaw mounted on the post, a second support, a gripperjaw carried thereby and constructed to straddle both the first namedsupport and the post, and means for relatively moving the supports tooperate the gripper jaws to grasp an upper and move the post relativelyto the first support to bring the upper into the shank of the shoe.

22. A lasting machine, having, in combination, a support extendingtransversely of the shoe, a pair of posts thereon mounted to embrace theshoe, a pair of arms mounted to embrace the posts, a gripper jaw mountedon each post, a gripper aw mounted on each arm, and means for operatingthe arms to close the gripper aws of each pair upon the upper and movethe posts on the first named support to stretch the upper and bring itinto lasted position against the edge face of the insole.

23. A lasting machine, having, in combination, a support, a post carriedthereby, a gripper jaw mounted on the post, a second support, and agripper jaw carried thereby having a pair of tines to engage the upperat separated points and straddle the first support and post.

24-. A lasting machine, having, in combination, a support, a postcarried thereby, and. a gripper jaw having a narrow slot to straddle thesupport and a Wider slot to straddle the post. v

25. A lasting machine, having, in combination, a support, a post carriedthereby, and a gripper jaw having a narrow slot to straddie the supportand a wider slot to straddle the post, said slots being separated byshoulders which fulcrum on the back of the post.

26. A lastin machine, having, in combination, a support extendingtransversely of the shoe and n'ovidcd with lasting devices directlyengaging the upper for lasting the opposite sides oi the shank of theshoe, a

carrier for the support, and means for slid- .ing the lasting devicesalong the support.

27. A lasting machine, having, in combi nation, a support extendingtransversely of the shoe and provided with lasting devices for lastingthe opposite sides of the shank of the shoe, means for sliding thelasting devices along the support, and means-tor tipping the support toadapt the lasting devices thereon to the spring of the last.

28. A shoe machine, having, in combination, a gage, a pivoted armtherefor, means for normally holding the arm elevated, and

means for drawing the gage .down upon the work comprising a secondpivoted arm, a hook pivotally and slidably mounted on the arm, a loop onthe first arm, and a segment mounted to insert the hook in the loop andlock the second arm in a depressed position when the gage is positionedon the work.

29. A lasting machine, having, in combination, a gripper, means foroperating the gripper to grasp an upper, means for con straining thegripper to move along a plane to stretch the upper and locate thestretched upper against the edge face of the insole, and means forsecuring the upper in final lasted position to the edge face of theinsole.

In testimony whereof I have signed my name to this specification.

MARK E. FERNALD.

